Fireproof composition.



, 'tion of the 'State of Ohio,

tive lining for s a OF YOUNGSTOWN, OHIO,

SPOTTS, OF YOUNGSTOWN, OHIO.

PASQUALE ZAPPI,

ASSIGNOB OF ONE-FOURTH TO JOSEPH J.-

Fmnrnoor comrosmmn.

No Drawing.

Specification of Application filed May 23,

To all whom it may concern:

Be it known that I, PASQUALE ZArrI, a subject of the King of Italy, and resident of Youngstown, county of Mahoning, and have invented certain new and useful Improvements in Fireproof ompositions, of which the following is a specification.

This invention relates broadly to a fireproof composition, and more'particularly to a fireproof insulation material.

The primary object ofthe invention is to provide an 'incombustible composition capable of being molded to form slabs, bricks or blocks for use in building construction, and which is adapted to be used in slab form as a substitute for lath and plaster, as a protecfes and vaults, and as an insulation covering or lagging for boilers, steam pipes an the like. 7

A further object is to provide a composicharacter mentioned which will not crack, craze, or scale off after being heated, which is a non-conductor of sound, heat and electricity, which is light in weight, and which may be sawed and nailed in the manner of woo v A further object within the contemplation of the invention is to provide a composition which, used as an interior finish in building construction, is perfectly sanitary and affords no harbor in which insects may find lodgment.

The composition consists of certain materials or ingredients mixed together, preferably in about the following proportions, by volume.

consisting Letters P en Patented J an. 2, 1917.

1916. Serial No.99,464.

Gypsum 44 per cent Sawdust Asbestos fiber 20 Kaolin 5 Boric acid 1 Slight variations in the proportions may be resorted to without changing the genera character of or materially afiecting the efiiciency of the composition.

To the above materials, dry mi'xed', sufficient water is added to reduce the whole to a plastic mass of the proper consistency for turning into molds or for applying 1nthe desired manner. As is obvious, the material may be handled commercially in its'dry state and then reduced to a plastic form only when ready to use.

What is claimed is- V 1. A plastic composition comprising thirty parts of a vegetable fibrous material, forty-four parts gypsum, twenty parts as bestos fiber, five parts kaolin and one part boric acid.

2. A non-conductive plastic composition of the following ingredients mixed in about the proportions name Gypsum 44 per cent.

, Sawdust 30 Asbestos fiber 2O Kaolin 5 Boric aci 1 In testimony whereof, I afiix my signature in presence of two subscribin witnesses.

PASQUA E ZAPPI. Witnesses:

JAMES F. FANAGHER, Gno. SWANSTON. 

